Loud clunk from rear of truck at low speeds

[mustangguy289]

I have a loud "clunk" at low speeds. It seems most prevalent on slight bumps, but sometimes i hear it on perfectly smooth concrete. You can feel it too. The sound is similar to a golf ball rolling around in the bed when it would hit the tail gate. I have checked all suspension components and they are all tight. I have checked main body mounts and they are all tight at 90 ft lbs. Truck has a 2" eibach level kit that included all 4 shocks.

Any ideas of what else I could check? It is driving me nuts. Truck has 47k miles on it.

 

[GUNBUNNY2BG4U]

You know I own a ram I also had a 1 ton Ford F-350 I had something similar when I brought it back to the dealership it took him a while but it ended up being the slip yoke with the rear drive shaft goes into the transfer case with not lubricated properly They grease the splines in that problem went away.

 

[mustangguy289]

I just noticed both rear sway bar links were loose. Tightened them up with some loctite,..let's see if that resolves it.